<template>
  <div class="app-container">
    <!--Head-->
    <mt-header fixed title="自学程序员 Vue 项目">
      <router-link to="" slot="left" tag="div" v-show="isShowBack">
        <mt-button icon="back" @click="back">返回</mt-button>
      </router-link>
    </mt-header>
    <!--middle router-view-->
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item-my" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item-my" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
      <router-link class="mui-tab-item-my" to="/shorpcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
          <span id="cart-ball" class="mui-badge">{{$store.getters.getAllCount}}</span>
        </span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item-my" to="/member">
        <span class="mui-icon mui-icon-contact"></span>
        <span class="mui-tab-label">会员</span>
      </router-link>
    </nav>

    <transition>
      <router-view></router-view>
    </transition>
    <div class="placeholder"></div>
    <!--foot tabbar-->
  </div>
</template>

<script>
export default {
  data(){
    return{
      isShowBack:true
    }
  },
  methods:{
    back(){
      this.$router.back();
    },
    backBtn(now){
      console.log(now);
      /*控制返回按钮是否显示*/
      this.isShowBack=now=="/home"?false:true;
    }
  },watch:{
    '$route.path':function (now,old) {
      this.backBtn(now);
    }
  },created() {
    this.backBtn(this.$route.fullPath);
  }
}
</script>
<style lang="scss" scoped>
@import "./base/baseRem.scss";
.mint-header.is-fixed{
 z-index: 100;
}
.app-container{
  padding-top:remFu(35);
  overflow-x: hidden;
}
/*底部占位符抵消底部navbbar*/
.placeholder{height: remFu(50)}

.v-enter{
  opacity: 0;
  transform: translateX(100%);
}
.v-leave-to{
  opacity: 0;
  transform: translateX(-100%);
  position: absolute;
}
.v-enter-active, .v-leave-active{
   transition: all 0.4s ease;
 }

/*解决于滑动条类名冲突*/
  .mui-tab-item-my{
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
    .mui-icon{
      top: 3px;
      width: 24px;
      height: 24px;
      padding-top: 0;
      padding-bottom: 0;
    }
    .mui-tab-label{
      font-size: 11px;
      display: block;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    &.mui-active{
      color: #007aff;
    }
  }

</style>
